My personal preference is to have a board that I can wire up my own controls too. When it comes to POTs and mainly knobs I like having some knobs be bigger than other knobs. Things you may touch rarely in a show would be a small knob but then things used all the time have a slightly bigger knob. Same goes for switches. Sometime you want a push button, sometimes you want a latching push button and sometimes you want a toggle switch. I would be more likely to purchase the PCB board with screw terminals than an off the shelf ready to go controller.
My .02